Her actions had the logic and reason of a sociopath that cared for nothing and no one but herself, read Edge of Night, read the Lich King book. Accept. Her character did not change one bit since then, only the scale of her crimes.
Even now where she is literally trying to destroy the universe and talks about how she will free us, everyone knows she does it for herself and no one else. She thinks fate has been unfair to her so instead of accepting that she will destroy everyone lifes. You can't be more selfish and self-centered then that.